According to different effects, different lenses can be used to change the light field distribution of the LED. Other types of lenses, such as camera lenses, telescope lenses, etc., are beyond the scope of this article. This article focuses on auxiliary condensers for high-power LED lenses. What are the specifications and classifications of LED lenses.
①COB lens straight-through type (convex lens)
When the LED light passes through the curved surface of the lens (the double convex surface has a curved surface), the light will be refracted and gathered, and when the distance between the lens and the LED is adjusted, the angle will also change (the angle is inversely proportional to the distance). The optical design of the lens spot will be very uniform, but due to the limitation of the lens diameter and mode, the light utilization efficiency of the LED is not high, and there are obvious yellow edges on the edge of the spot.
②COB lens refraction type
The lens is designed with a transparent spotlight, and the conical surface can collect and reflect all side light, and the overlap (same angle) of these two kinds of light can achieve the most perfect light utilization and aesthetics. speckle effect.
The lens surface can also be made some changes, it can be designed as mirror surface, frosted surface, bead surface, stripe surface, thread surface, convex surface or concave surface to obtain different spots.
③COB lens lens module
A complete multi-lens lens is completed by injection molding multiple single lenses. According to different needs, it can be designed as three-in-one, five-in-one or even dozens of lens modules. Two separate lenses can also be combined with the stand.
This design effectively saves production cost, realizes the consistency of product quality, saves the space of the lamp mechanism, and makes it easier to realize high-power functions.